Update comments about window.getComputedStyle in both locations.

Author: rwaldron

src/css.js

@@ -278,7 +278,7 @@ jQuery.extend({
 	}
 });
 
-// NOTE: To any future maintainer, we've used both window.getComputedStyle
+// NOTE: To any future maintainer, we've window.getComputedStyle
 // because jsdom on node.js will break without it.
 if ( window.getComputedStyle ) {
 	curCSS = function( elem, name ) {

src/support.js

@@ -214,10 +214,8 @@ jQuery.support = (function() {
 		support.boxSizing = ( div.offsetWidth === 4 );
 		support.doesNotIncludeMarginInBodyOffset = ( body.offsetTop !== 1 );
 
-		// NOTE: To any future maintainer, window.getComputedStyle was used here
-		// instead of getComputedStyle because it gave a better gzip size.
-		// The difference between window.getComputedStyle and getComputedStyle is
-		// 7 bytes
+		// NOTE: To any future maintainer, we've window.getComputedStyle
+		// because jsdom on node.js will break without it.
 		if ( window.getComputedStyle ) {
 			support.pixelPosition = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
 			support.boxSizingReliable = ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";